Note:
for these tests:
igt@kms_busy@extended-modeset-hang-newfb-render-A
igt@kms_busy@extended-modeset-hang-newfb-render-B
igt@kms_busy@extended-modeset-hang-newfb-with-reset-render-A
igt@kms_busy@extended-modeset-hang-newfb-with-reset-render-B
the reproduction rate of FIFO underruns appear to be 100% on the SNB-shards.

Patches integrated to CI_DRM_3289,
this will be interesting to follow. As long as I have been filing cibuglog I have averaged about 1 new occurrence of FIFO underrun on SNB a day. So, I have to wait a while before closing,
anyways:
igt@kms_busy@extended-modeset-hang-newfb-render-A
igt@kms_busy@extended-modeset-hang-newfb-render-B
igt@kms_busy@extended-modeset-hang-newfb-with-reset-render-A
igt@kms_busy@extended-modeset-hang-newfb-with-reset-render-B
are now green on CI_DRM_3289.